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(Minimally Invasive Repair of Abdominal Aortic Aneurysm; EVAR)
Deanna M. Neff, MPH
The aorta is the largest artery in the body. The abdominal part of the aorta is located below the diaphragm. It carries blood to the abdomen, pelvis, and legs. Sometimes, the walls of the aorta weaken and bulge in one area. This is called an abdominal
(AAA). When the aneurysm reaches a certain size, it may need to be repaired. Endovascular repair of an AAA (EVAR) is done from the inside of the artery. The doctor inserts a stent graft into the area to strengthen it.
This procedure is often done to repair AAA when the aneurysm:
Causes physical symptoms (eg, abdominal pain)
Causes complications (eg, clots that travel into the legs)
Reaches a certain size and position that meets criteria for EVAR
Has burst—Surgery must be done right away.
EVAR is now the preferred method to treat AAA. EVAR can result in less pain, shorter hospital stay, fewer complications, and faster recovery time compared to open surgery. However, closer follow-up over many years is needed.
You will lie on your back. You will receive medicine to ease pain and relax you. Once you are asleep and sedated, a breathing tube will be inserted into your throat and lungs. Sometimes, regional anesthesia will be used. A breathing tube will not be needed in this case.
The doctor will make small incisions in both sides of the groin. Catheters (thin tubes) will be inserted into the blood vessels and threaded up toward the aneurysm. Contrast dye will be injected through the catheters. The doctor will then guide a stent graft to the site. The graft will be placed into the weakened area and extended into both pelvic arteries. To guide each step, the doctor will use live x-ray images. Your vital signs will be monitored. Once the graft is in place, the doctor will remove the catheters. The incisions will be closed. Sterile bandages will be applied.
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